Copper(0)‐mediated radical copolymerization of vinyl acetate and acrylonitrile in DMSO at ambient temperature
Copper(0)‐mediated radical copolymerization of vinyl acetate and acrylonitrile in DMSO at ambient temperature
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DOI：
10.1002/pola.26334
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Huali Yu;Yang Wu;Jinlong Gao;Wen-Xia Wang;Zhengbiao Zhang;Xiu-lin Zhu
中科院分区：
文献类型：
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作者：
Huali Yu;Yang Wu;Jinlong Gao;Wen-Xia Wang;Zhengbiao Zhang;Xiu-lin Zhu
本文研究了铜(0)催化的醋酸乙烯酯(VAc)和丙烯腈(AN)的自由基共聚合。聚合反应温度为25℃，以2，2‘-联吡啶为配体，二甲基亚砜为溶剂。共聚反应顺利进行，在较低的VAc投料比下得到了相对分子质量可控的产物。较高的VAc进料比导致聚合速率较低，且相对分子质量控制不佳。红外光谱、核磁共振氢谱和差示扫描量热法证实了共聚物的成功合成。根据核磁共振氢谱计算出VAc和AN的竞聚率分别为0.003和1.605。这项工作传达了铜(0)引发的AN和VAc自由基聚合的第一个例子，其中VAc不能通过铜(0)介导的自由基聚合技术进行均聚。2012 Wiley期刊公司J Polym Sci Part A：Polym Chem，2012
In this work, Cu(0)‐mediated radical copolymerization of vinyl acetate (VAc) and acrylonitrile (AN) was explored. The polymerization was carried out at 25°C with 2,2′‐bipyridine as ligand and dimethyl sulfoxide as solvent. The copolymerization proceeded smoothly producing moderately controlled molecular weights at low VAc feed ratios. The high VAc feed ratios generated low polymerization rate and poorly controlled molecular weights. FTIR,1H NMR, and differential scanning calorimetry confirmed the successful obtaining of the copolymers. Based on1H NMR spectra, the reactivity ratios of VAc and AN were calculated to be 0.003 and 1.605, respectively. This work conveyed the first example for the Cu(0)‐mediated radical polymerization of AN and VAc, wherein VAc cannot be homopolymerized by Cu(0)‐mediated radical polymerization technique. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012